Form



' 'uly 22, 1930.

'IIII Il.

/l/ (Il hl ff M D. H. HAYDEN Fonu.

Filed May 10,

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j mnntoz Mg. im, www h July 22, 1930'. D. H. HAYDEN 1,771,119

ronn Filed lay 10, 1924 2 Sheets-Sheet 2 .m ,www

Patented July 22, 1930 DAVD H. HAYDEE', OF IBROKLYN, NEW YORK rom/r Application led May 10,

My invention relates to an improvement in forms for concrete, and one of the'objects thereof is the provision of an improved construction in this 'art whereby much of the de- 5 lay incidental to this type of work as now performed is eliminated, my improved construction permitting the concrete work to keep abreast of the steel work.

A further object of my invention isthe prow vision of an improved construction whereby not only may the forms be constructed as the steel work proceeds, but the wrecking of the forms after the concrete has been poured may be accomplished'with the minimum amount of labor and in thelminimum time.

A further object of my invention is the provision of a construction of the character above indicated wherein light timbers only are required, thus not only reducing the cost so far as the materials themselves are concerned, but also reducing the labor cost as applied both to erecting and wrecking.

In all of the various methods now employed in this kind of work the construction of the molds or forms enclosing the girders is the slow part of the work, but in my improved construction this portion ofthe work may proceed rapidly, my improved apparatus being of such a character that the girder construction may be installed in the whole building, if desired, before installation ofy the panels or bays. f

A further object of my invention is the provision of girder form construction and panel decking so constructed and arranged that loading the panels at one side ofthe girder forms will not affect the other side.

A still furt-her object of my invention vis the provision of a form structure in which e the girder forms bounding the panel are independently suspended intermediate their ends, braces being provided for preventing relative movement between the forms, thereby eliminating in a practical way swaying 5 of the forms or relative movement of the component parts of the forms.

A still further object ofy my invention is the provision of a form structure in which t-he panel deck structure issupported mainly by the girder firms, thereby eliminating to 1924. serial no. 712,210.

a very considerable degree the numerous supporting posts whichare employed under the present practice for supporting the deck structure.

Another object of the invention is the provision of an improved form construction wherein the forms may be built in tiers without waiting until the concrete has been poured ateach floor. In other words, it is unnecessary to wait until the work at one floor has been completed before proceeding with the erection of theV forms at the neXt floor.

Further objects of myinvention will appear hereinafter..

In the accompanying drawings I have shown my improved construction in its various stages:

Figure 1 is a perspective view showing part of one of the girder forms and the devices for supporting and bracing the forms.

F ig. 2' is a section on the line 2-2 of Fig. 1;

Fig. 3 shows in detail the hangers employed in suspending the girder forms;

F 4 is a detail of the girder forms;

F1g.'5 is a somewhat enlarged view of the 75 girder forms showing the end of one of the form girders in place;

Fig. 6 is a plan view of the panel or bay with part of the floor or deck thereof in place; i 8" -F ig. 7 shows the supporting posts inplace and the 'means for leveling the panel;

Fig. 8 is a section on the line 8 8 of Fig. 6;

Fig. 9 is a view after the concrete has been poured and showing the shock post in place;

Fig. l0 shows a modified .method of adjusting the supporting posts, this form being of advantage when the forms are built in tiers; and

F ig. 11 is a further modification of the supporting post-s.

ReferringV to the drawings in detail, 1 and 2 designate columns which are spanned by a giider 3. 4 and 5 designate two other girders 95 which it will be understood extend from the ycolumns 1 and 2 to two other columns which are not shown, these last two columns being spanned by a fourth girder. p

The girder forms for these four girders, of 100 course, constitute the boundaries of the panel or bay.

Each column is provided with a collar or clamp, which I have designated 6 and 7. These clamps may be of any suitable type and are applied directly to the column.

suspending from the girders intermediate their ends are metal hangers 8 Carrying diagonals 9. The hangers, as illustrated, have a loop in their lower ends in which is hooked a member 10, this member extending down between a pair of diagonals 9, each diagonal, so to speak, comprising two members, and the lower end of the member 10, is provided with a loop 11 in which I insert a piece of wood or other suitable material, designated 12, which will lie underneath the diagonale 9. In this fashion the diagonals, it will be seen, will be suspended from the girders. It is to be noted that the hangers 8 are in pairs and that one is hooked over the girder from one side while the other is applied from the opposite side.

The girder forms comprise sotlit members 13, in sections, if desired, the joint between the adjacent ends of the soffits falling on the diagonals 9. The side members or haunches 14 and 15 of the girder forms have their ends resting on and supported by the column clamps or supports 6, as illustrated in the drawings, and these members are also preferably sectional for convenience in handling, the joint between the adjacent ends of the sections falling on the diagonals 9.

As so far described, it will be seen, therefore, that my improved construction is made up of what is known as one-man pieces, which allows the construction to be easily installed and just as easily wrecked after the concrete has been poured. It will be seen also that the girder forms are individually suspended intermediate their ends. I wish to mention also at this point that they may be suspended at their ends also, if desired.

In order that the adjacent girder forms may be held against relative movement I provide braces 16 which are nailed to the diagonals 9, as plainly indicated in Figs. 1 and 6. These braces also provide a rigid structure so far as the girder forms are concerned.

Two opposed sides of the bay or panel are provided with straight battened haunches, as shown in Fig. 4, the battens being designated 17. A ledger 18 is nailed to the outside of these battens and is provided for the purpose of forming a support for the joists 19 of the panel deck. The other two opposed haunches of the bay are not provided with ledgers 18, preferably, but are provided with stirrups 20, these stirrups supporting` the deck girders 21. It is to be understood that other means for supporting these form girders may be provided, if desired. As a matter of fact, two battens similar to the battens 17 could be applied to these haunches about six inches apart and a ledger member could span these battens. The stirrup, however, is perhaps a more convenient arrangement.

I have heretofore mentioned that the diagonals 9 and the braces 16 are in separate pieces. lt is tc he understood, however, that these members may be in one piece, 1f desired. I prefer the arrangement illustrated, however, inasmuch as the girders are not always of the same depth.

The panel deck structure is in the main supported by the girder forms. This deck structure is clearly illustrated in Figs. 6 and 7. In installing this structure I erect a group of supporting posts at the center of the deck, four posts having been employed in the present instance and designated 22, 23, 24 and 25. The posts 22 and 23 are connected to each other close to the floor by a stay lath 26, while the posts 24 and 25 are connected to each other by a stay lath 27. These stay laths are nailed to the posts and are provided for the purpose of tying the bottoms of the posts together.

rIhe tops of the posts are connected by means of a cap member or plate. I have designated these members 28 and 29, and they lie between the tops of the posts and the underside of the form girders. At a convenient height from the floor to form a scaffold I attach stay laths 30 and 31to the supporting posts and the workmen may install a part of the panel deck standing on these scaHolds. The deck girders 21 are preferably in sections for convenience in handling, the adjacent ends of these sections resting on the cap plates 28 and 29 immediately above the supporting posts. The joists 19 are set diagonally to accommodate the deck boards 34, this diagonal setting of the oists enabling the abutting ends of two boards to be conveniently nailed to the same joist.

rIhe bay or panel may be levelled by inserting wedges and 36 beneath the foot of each post, these wedges being driven in until the panel is levelled.

After the concrete is poured and before the beginning of the wrecking operation I insert a shock post 37 beneath the panel, this post, as will be apparent from the drawings. bearing against the underside of one of the deck boards 34. This post can be left in place as long as desired after the rest of the construction has been wrecked. The purpose of the shock post is to take care of careless loading of the concrete slabs before the slabs havf` properly set. These posts are small and consequently will. not interfere with other tra des working on the job before the posts are rcmoved. Wedges 38 are driven beneath the foot of the shock post or between the top of the post and the deck board, as desired, until llo lijd

the post is brought `into proper contact with the slab. 1

In wrecking my improved forms the wedges 35 and 36. are removed from beneath their respective posts. The stay laths 26 and 27 may be then removed and the posts themselves removed by attaching a rope or other convenientdevice thereto. The deck materials will then fall to the iloor and inasmuch as they are in short sections vthe floor will not be damaged. The girder forms may then be removed by simply removing the diagon als 9 and the column supports or clamps 6, leaving the haunches and soiiits supported by the adhesion between the concrete and the wood. These members may then be removed by pinch bars or other convenient tool. VThe ha 8 by which the girder forms are suspended from the girders are left in place enclosed in the concrete, the hooksl l() only being reine-ved. These hooks may be readily removed by siniply working them loose from the concrete and then unhooking them from the hangers.

As I have pointed out hereinbefore, my improved construction may be built up in tier formation, one set of forms being built or superimposed upon the other. This is indi cated in Fig. l0.- I might say at this point, however, that in constructing my forms at different floor levels the supporti 23, 24 and 25 at one floor level are placed immediately above corresponding posts on the level below. If desired, posts similar to the posts 22, 23, 24 and 25 may be employed in building up the tier formation, but I prefer to employ a form of post such as illustrated in Fig. l0 or in Fig. 11. Referring to Fig 1l, it will be seen that the post there designated 22 is shorter than the corresponding post 22. To lengthen the post to the desired length I insert a block of wood 39 attached to the foot of the postbycripples 40. i plate 4l rests on the panel deck of the floor below and immediately above the top of the supporting post on that iioor. The block 39 carries a bolt 42 and washer nut 423. rlChe post 22 and block 39 rest on the washer nut and the lower end of the bolt, which is sli `Q'htly pointed, rests in a hole in the plate al. lli/Ihren this type of supporting post is employed the panel may be levelled by driving wedges between the tops of these posts and the cap plate, as indicated on the drawing. These forms may be built up any number of stories desired without regard to whether the concrete has been poured or not. lVhen the concrete is poured, of course, the plate ll will be covered over but is easily removed when the deck board on which it rests is removed. Then this type of supporting post is ein ployed and is placed before the concrete is poured, the same may be readily removed after the concrete is in place by merely removing the wedges at the top of the post, removing the cripples lil), and then pulling g posts 22,

the post out, after which thebolt and its supporting post, this post being designated 22". It will be noticed from an inspection of this figure of the drawings that the foot of this post is slightly pointed and rests on the deck board below. In wrecking this construction it is a simple matter to merely loosen the post and lift it out of the concrete entirely due to its pointed end.

It will be seen from the foregoing that the girder forms employed by me are suspended intermediate their ends and so braced that relative movement between the forms is prevented, this bracing also preventing. swaying of the entire panel structure. It will be seen also that the deck is supported princi-V pally by the girder forms, only four supporting posts being employed in my construction, as illustrated. This, of course, is of great advantage Vover that form of construction wherein supporting posts are employed at fairly close intervals throughout the extent of the panel as well as beneath the girder formsthemselves and permits the various trades to install their apparatus after the forms have been erected. It will be seen also that throughout my improved construction I employ short lengths or sections of materials, thereby reducing the costi of handling the same inasmuch as less labor is required for handling these materials and,

also reducing the danger or liability of injury i to the floor below when the forms are wrecked. It will be seen also that by my improved construction I am able to build up the forms in tiers, permitting any number of tiers to be installed without regard to whether the concrete at each form has been poured or not. It will be apparent also that by my improved construction, whether the forms are built in tiers or not, it is feasible to install the girder forms as fast as the `tional sohit and haunoh members Carried by said end and intermediate supports and lateral braces for the soft and haunch members 'detachably secured to said intermediate supports, substantially as described.

2. In a girder form construction, the combination ot' end and intermediate supports for the girder forms, said intermediate supports being suspended rom the girders at points intermediate their ends, the girder 'forms comprising sectional sollit and hauneh boards carried by said end and intermediate supports, and lateral braces tor the sollit and haunch boards detachably secured to the lower portions of the girder forms at points intermediate their ends, substantially as described.

our girder forms bounding a bay or panel, end supports for said girder t'orms, diagonal supports for the girder 'liorms suspended from the girders and extending beneath the forms at points intermediate their ends, and lateral braces for the gir-der forms extending diagonally of the bay or panel and detaclr ably secured to said diagonal supports, substantially as described.

t. In a form structure, the combination of l'our girder forms bounding a bay or panel, stirrups carried by the haunches ot two opposite girder forms, form girders supported by said stirrups, ledger members secured to the haunches of the other tWo girder forms, joist sections each having one end supported by said ledgers and the other end by said form girders, and a panel deck supported by said joints.

5. In a form structure, the combination of four girder forms bounding a bay or panel, supporting posts tor the central portion of the bay, cap plates joining the upper ends of said posts, deck girders extending transversely of the bay and each comprising overlapping sections, the outer ends of said deck girders being detachably supported upon the sides oi said girder forms and the intermediate overlapping ends thereof being supported by said cap plates, and a deck carried by said deck girders, substantially as described.

6. In a form structure for panels or bays, the combination of four girder forms bounding the bay or panel, a supporting upright for the center of the bay structure, deck girders comprising overlapping sections having their outer ends supported on the girder forms and their overlapping inner ends on said upright, deck joists comprising overlapping sections having their outer ends supported on the girder terms and their inner ends on the deck girders, and sectional deck boards secured to said joists, substantially as described.

5. In combination in a form structure for column supported girders, forms for said girders, end and intermediate supports for said forms, said intermediate supports being suspended from said girders, lateral braces tor the girder forms detacliably secured to said intermediate supports and a deck structure composed of overlapping girder and o. In a form structure, the combination ot ends, supporting uprights intermediate said girder 'forms and a sectional deck structure partially supported by said upright and partially by said girder forms, said deck structure being removable independently of said girder forms, substantially as described.

This specilication signed this 9th day of May, 1924.

DAVID I-I. HAYDEN.

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